Serum calcium as a biomarker of clinical severity and prognosis in patients with coronavirus disease 2019
Figure 1. The serum calcium levels were positively correlated with lymphocyte count (A, P <0.001), and albumin (B, P <0.001), 25-hydroxy-vitamin D (VD) (C, P =0.004), and lowest SpO2 (D, P< 0.001) levels.